Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：652.83 Kbytes 页数：36 Pages

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Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：779.27 Kbytes 页数：40 Pages

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亚德诺

Low Voltage Controller for Touch Screens

文件：779.27 Kbytes 页数：40 Pages

AD

亚德诺

用于触摸屏的低成本控制器

AD7879/AD7889是12位逐次逼近型模数转换器(SAR ADC)，具有同步串行接口以及用于驱动4线电阻触摸屏的低导通电阻开关。AD7879/AD7889工作电源电压极低，采用1.6 V至3.6 V单电源供电，吞吐速率为105 kSPS。这些器件具有关断模式，此模式下功耗不足6 µA。\n\n 为了降低来自LCD以及其它源的噪声，AD7879/AD7889内置预处理模块。预处理功能包括中值滤波器及均值滤波器。这两个滤波器的结合提供了更稳定的解决方案，能滤除信号中的杂散噪声，只保留有用的数据。两个滤波器的尺寸都可以设置。其它用户可编程转换控制包括可变采集时间及第一转换延迟。每次转 • 4线触摸屏接口\n\n• 电源电压：1.6V～3.6V\n\n• 中值滤波器与均值滤波器，用于降低噪声\n\n• 自动转换序列器与定时器\n\n• 用户可编程的转换参数\n\n• 辅助模拟输入/电池监控器（0.5 V～5 V）;

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亚德诺

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：779.27 Kbytes 页数：40 Pages

AD

亚德诺

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：652.83 Kbytes 页数：36 Pages

AD

亚德诺

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：652.83 Kbytes 页数：36 Pages

AD

亚德诺

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：779.27 Kbytes 页数：40 Pages

AD

亚德诺

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：652.83 Kbytes 页数：36 Pages

AD

亚德诺

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：779.27 Kbytes 页数：40 Pages

AD

亚德诺